基于逆系统理论的风力发电功率解耦控制

应用多变量非线性控制的逆系统控制理论,对双馈型变速风力发电系统的有功功率和无功功率进行了解耦控制.在双馈感应发电机状态方程的基础上,将其分解为有功功率和无功功率两个线性子系统,并应用该线性系统理论进行了综合.对整个风力发电系统进行了仿真研究,其结果表明,双馈型变速恒频风力发电系统不仅能够实现最大风能捕获,而且能够独立提供无功功率,这也验证了该解耦控制策略的有效性.

Decoupled Power Control based on Inverse System Theory for Wind Power Generation System

A decoupled power controller based on inverse system theory was developed for a variable-speed doubly-fed wind power generation system.The whole system was decomposed into the active power subsystem and the reactive power subsystem according to the state equations of the doubly-fed induction machine.Then the controller was designed based on the linear system theory.Simulations of the wind power generation system show that the system can not only capture the maximum wind energy,but also provide optional reactive power to the grid.The good performance of the system verifies the control strategy's feasibility.